Bump pytest-cov from 2.11.0 to 2.11.1 (#445)

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 2.11.0 to 2.11.1.
- [Release notes](https://github.com/pytest-dev/pytest-cov/releases)
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v2.11.0...v2.11.1)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

dev-requirements.txt

@@ -8,7 +8,7 @@ mock==4.0.3
 # Py.test stuff.
 pytest==6.2.1
 pytest-asyncio==0.14.0
-pytest-cov==2.11.0
+pytest-cov==2.11.1
 pytest-randomly==3.5.0
 
 # Coverage testing.